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Alto and Bass Flutes

from left to right:

Fig. 1—MacGregor's Bass Flute, 1810.

Fig. 2—Bass Flute in Diderot and D'Alembert's "Encyclopædia," 1751.

Fig. 3—Rudall, Carte & Co.'s Silver Bass Flute, Carte and Böhm's Systems Combined (1867 Patent).

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